222702643872 has 144 divisors (see below), whose sum is σ = 647293858848. Its totient is φ = 72612902400.

The previous prime is 222702643871. The next prime is 222702643883. The reversal of 222702643872 is 278346207222.

222702643872 is a `hidden beast` number, since 2 + 2 + 2 + 7 + 0 + 264 + 387 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (222702643871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2368183 + ... + 2460425.

It is an arithmetic number, because the mean of its divisors is an integer number (4495096242).

Almost surely, 2^222702643872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222702643872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323646929424).

222702643872 is an abundant number, since it is smaller than the sum of its proper divisors (424591214976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222702643872 is a wasteful number, since it uses less digits than its factorization.

222702643872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92443 (or 92432 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The spelling of 222702643872 in words is "two hundred twenty-two billion, seven hundred two million, six hundred forty-three thousand, eight hundred seventy-two".